Computer system with air duct

ABSTRACT

A computer system includes an enclosure, a printed circuit board, and an air duct. The enclosure comprises a bottom panel, a rear panel, and a mounting panel. The printed circuit board is mounted on the bottom panel and is located between the rear panel and the mounting panel. A plurality of expansion cards is inserted in the printed circuit board. The plurality of expansion cards is substantially parallel to each other. The air duct is placed on the rear panel and the mounting panel. The air duct comprises an air duct body and a guiding plate. The guiding plate comprises a securing portion secured to the air duct body and a plurality of bent elastic tabs extending from the securing portion at an angle. The plurality of bent elastic tabs resists the plurality of expansion cards, thereby guiding air to flow to the plurality of the expansion cards.

BACKGROUND

1. Technical Field

The present disclosure relates to a computer system with an air duct.

2. Description of Related Art

Air ducts are commonly used for facilitating heat dissipation ofelectronic components of a computer system. The air duct covers theelectronic components of the computer system to guide airflow from fansto the electronic components. For a large sized computer system, such asa server system, which has a great number of electronic components, alarge sized air duct is needed to dissipate a massive amount of heatfrom electronic components. However, some space around the electroniccomponents is empty, but the air still flows through the empty space,thus decreasing the dissipation efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the embodiments can be better understood with referencesto the following drawings. The components in the drawings are notnecessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the embodiments. Moreover, in thedrawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is an exploded, isometric view of a computer system in accordancewith an embodiment.

FIG. 2 is an exploded, isometric view of an air duct of the computersystem of FIG. 1.

FIG. 3 is an assembled view of the air duct of FIG. 2.

FIG. 4 is an assembled, isometric view of FIG. 1.

FIG. 5 is an assembled, isometric view of a computer system inaccordance with another embodiment.

DETAILED DESCRIPTION

The disclosure is illustrated by way of example and not by way oflimitation in the figures of the accompanying drawings in which likereferences indicate similar elements. It should be noted that referencesto “an” or “one” embodiment in this disclosure are not necessarily tothe same embodiment, and such references mean at least one.

FIG. 1 is a computer system in accordance with an embodiment includingan air duct 10, an enclosure 30, a printed circuit board 50, and aplurality of expansion cards 70. The plurality of expansion cards 70 issubstantially parallel to each other.

The enclosure 30 includes a bottom panel 31, a rear panel 33perpendicularly extending from the bottom panel 31, a mounting panel 35mounted to the bottom panel 31, and a side panel perpendicularlyextending from the bottom panel 31. The side panel 37 is substantiallyperpendicular to the rear panel 33. The mounting panel 35 issubstantially parallel to the rear panel 33. The expansion cards 70 aresubstantially perpendicular to the rear panel 33. The rear panel 33includes a rear panel body 331, a support panel 333 extending from therear panel body 331 perpendicularly, and two connecting arms 335connected between the support panel 333 and the rear panel body 331.Each connecting arm 335 is arc-shaped. The mounting panel 35 defines apositioning cutout 351.

The printed circuit board 50 is mounted to and is parallel to the bottompanel 31. The printed circuit board 50 includes a plurality of insertingslots 1 for receiving the expansion card 70.

Referring to FIG. 2, the air duct 10 includes an air duct body 11 and aguiding plate 13 mounted to the air duct body 11. The air duct body 11includes a top wall 111, two sidewalls 113 extending from the top wall111, and a first mounting portion 115 and a second mounting portion 117,both extending from opposite sides of the top wall 111. The twosidewalls 113 are parallel to each other. The first mounting portion 115includes a positioning protrusion 1151 corresponding to the positioningcutout 351. The second mounting portion 117 is placed on the supportpanel 333. The air duct body 11 further includes a plurality of securingprotrusions 1111 extending from the inner side of the top wall 111. Theguiding plate 13 includes a securing portion 131 and a plurality ofelastic tabs 133 extending from the securing portion 131. A cap 135 isdefined between two adjacent elastic tabs 133. Each elastic tab 133 isS-shaped. The securing portion 131 defines a plurality of securing holes1311 corresponding to the securing protrusions 1111.

Referring to FIGS. 1 to 4, in assembly, the securing protrusions 1111 ofthe air duct body 11 are received in the securing holes of the guidingplate 13 and are secured with the securing holes via rivet joint. Thefirst mounting portion 115 and the second mounting portion 117 of theair duct 10 correspond to the mounting panel 35 and the rear panel 33.At this time, the positioning protrusion 1151 of the first mountingportion 115 is aligned with the positioning cutout 351 of the mountingpanel 35. The second mounting portion 117 is aligned with the supportpanel 333 of the rear panel 33. The elastic tabs 133 are aligned withthe expansion cards 70. The air duct 10 moves downward to enable thepositioning protrusion 1151 to be inserted in the positioning cutout351. The second mounting portion 117 is placed on the support panel 333.At this time, the second mounting portion 117 is located between the twoconnecting arms 335. Each elastic tab 133 resists elastically againstthe corresponding expansion card 70.

In use, the elastic tabs 133 guide air to flow to the expansion cards 70when air flows to the elastic tabs 133 of the air duct 10, therebyenhancing the dissipation efficiency.

Referring to FIG. 5, the computer system includes a plurality ofexpansion cards 90 which are bigger than the expansion cards 70. Theelastic tabs 133 resist against the plurality of expansion card 90.

It is to be understood, however, that even though numerouscharacteristics and advantages have been set forth in the foregoingdescription of embodiments, together with details of the structures andfunctions of the embodiments, the disclosure is illustrative only andchanges may be made in detail, especially in matters of shape, size, andarrangement of parts within the principles of the disclosure to the fullextent indicated by the broad general meaning of the terms in which theappended claims are expressed.

What is claimed is:
 1. A computer system comprising: an enclosure, theenclosure comprises a bottom panel, a rear panel extending from thebottom panel, and a mounting panel mounted on the bottom panel; aprinted circuit board, the printed circuit board is mounted on thebottom panel and is located between the rear panel and the mountingpanel; a plurality of expansion cards are inserted in the printedcircuit board; and the plurality of expansion cards are substantiallyparallel to each other; and an air duct, the air duct is placed on therear panel and the mounting panel; the air duct comprises an air ductbody and a guiding plate; the guiding plate comprises a securing portionsecured to the air duct body and a plurality of bent elastic tabsextending from the securing portion at an angle; and the plurality ofbent elastic tabs resists the plurality of expansion cards, therebyguiding air to flow to the plurality of expansion cards.
 2. The computersystem of claim 1, wherein the rear panel comprises a rear panel body, asupport panel extending from the rear panel body, and a connecting armconnected between the support panel and the rear panel body; the supportpanel is substantially perpendicular to the rear panel body; and the airduct body is placed on the support panel.
 3. The computer system ofclaim 2, wherein the connecting arm is arc-shaped.
 4. The computersystem of claim 1, wherein the air duct body comprises a top wall andtwo sidewalls extending from opposite sides of the top wall, and theguiding plate is secured to an inner side of the top wall.
 5. Thecomputer system of claim 4, wherein the top wall comprises a pluralityof securing protrusions, and the securing portion defines a plurality ofsecuring holes receiving the securing protrusions.
 6. The computersystem of claim 1, wherein the air duct body comprises a positioningprotrusion, and the mounting panel defines a positioning cutoutreceiving the positioning protrusion.
 7. The computer system of claim 1,wherein each bent elastic tab is S-shaped.
 8. The computer system ofclaim 1, wherein the rear panel is substantially perpendicular to thebottom panel, and the rear panel is substantially parallel to themounting panel.
 9. The computer system of claim 8, wherein the enclosurefurther comprises a side panel perpendicularly extending from the bottompanel; the side panel is connected between the mounting panel and therear panel; and the side panel is substantially parallel to theplurality of expansion cards.
 10. The computer system of claim 1,wherein the printed circuit board is substantially parallel to thebottom panel, and the rear panel is substantially perpendicular to theplurality of expansion cards.
 11. A computer system comprising: anenclosure, the enclosure comprises a bottom panel, a rear panelextending from the bottom panel, and a mounting panel mounted on thebottom panel; an air duct, the air duct is placed between the rear paneland the mounting panel; the air duct comprises an air duct body and aguiding plate; the guiding plate comprises a securing portion secured toan inner surface of the air duct body and a bent elastic tab extendingfrom the securing portion at an angle; the bent elastic tab resists anexpansion card mounted on the bottom panel, thereby guiding air to flowto the expansion card.
 12. The computer system of claim 11, wherein therear panel comprises a rear panel body, a support panel extending fromthe rear panel body, and a connecting arm connected between the supportpanel and the rear panel body; the support panel is substantiallyperpendicular to the rear panel body; and the air duct body is placed onthe support panel.
 13. The computer system of claim 12, wherein theconnecting arm is arc-shaped.
 14. The computer system of claim 11,wherein the air duct body comprises a top wall and two sidewallsextending from opposite sides of the top wall, and the guiding plate issecured to an inner side of the top wall.
 15. The computer system ofclaim 14, wherein the top wall comprises a plurality of securingprotrusions, and the securing portion defines a plurality of securingholes receiving the securing protrusions.
 16. The computer system ofclaim 11, wherein the air duct body comprises a positioning protrusion,and the mounting panel defines a positioning cutout receiving thepositioning protrusion.
 17. The computer system of claim 11, wherein thebent elastic tab is S-shaped.
 18. The computer system of claim 11,wherein the rear panel is substantially perpendicular to the bottompanel, and the rear panel is substantially parallel to the mountingpanel.
 19. The computer system of claim 18, wherein the enclosurefurther comprises a side panel extending from the bottom panelperpendicularly; the side panel is connected between the mounting paneland the rear panel; and the side panel is substantially parallel to theexpansion card.
 20. The computer system of claim 11, wherein the rearpanel is substantially perpendicular to the expansion card.